Tree Protection Area

Technical Standards for Tree Protection Areas

1.. Identify all native trees a development site early in the planning and design phase of a project. Identify locations, topographic position, species, size (height, DBA caliper, and canopy coverage areas), health and general quality of the tree to be preserved.

2.. Determine the  minimum length, size and width of the area of the critical root zone and all feeder roots and map it on the site plan. This generally will be found using the ratio of one (1) foot of diameter to one (1) inch of tree caliper at DBH.

3..Establish limits of working area around the protected tree area and surround by a tree protection barricade adjusted for site topography and size and condition of tree or grove. Each tree protection area or habitat protection area must be sized by an arborist, landscape architect or ecologist to ensure survival of the tree. 

4..Mulch TPA with three (3) inches of green pine bark mulch to protect and nourish the CRZ during construction.

5.. Design the protection barrier as a six foot tall wood fencing or chain link fencing  or other suitable enclosure material that will prevent access to the area to be preserved during the construction period. This area shall not be accessible, graded, filled, used for storage or violated with chemical spills.   

6..Add Protection Signage to protection barrier to notify and warn contractors with the message: “No Access Allowed. 

Tree Protection Areas and critical root zones are also discussed under the section of this document describing Design Components